Category: Diagnostic Tips

Cold Start Idle Concern, Engine Sags While Shifting Into Drive or Reverse – 2007 Chevrolet Silverado & GMC Sierra

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#07-06-04-007: LY6 COLD START IDLE CONCERN, ENGINE SAGS WHILE SHIFTING INTO DRIVE OR REVERSE (REPROGRAM PCM) (MAR 5, 2007)

Subject: LY6 Cold Start Idle Concern, Engine Sags While Shifting Into Drive or Reverse (Reprogram PCM)
Models: 2007 Chevrolet Silverado HD
2007 GMC Sierra HD
with Vortec 6.0L V8 Engine (VIN K — RPO LY6)

Condition

Some customers may comment that the vehicle’s engine sags while shifting into drive or reverse when it is cold outside.

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04-07-30-013D: Automatic Transmission Shift and Engine Driveability Concerns and/or MIL ON Due to Aftermarket Oil Bath Type Air Filter Use – 2018 and Prior GM Cars and Light Duty Trucks

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#04-07-30-013D: Automatic Transmission Shift and Engine Driveability Concerns and/or MIL ON Due to Aftermarket Oil Bath Type Air Filter Use – (Nov 22, 2017)

Subject: Automatic Transmission Shift and Engine Driveability Concerns and/or MIL ON Due to Aftermarket Oil Bath Air Filter Use
Models: 2018 and Prior GM Passenger Cars and Light Duty Trucks
Attention: This Bulletin also applies to any of the above models that may be Export from North America vehicles.

This Bulletin has been revised to add the 2017-2018 Model Years. Please discard Corporate Bulletin Number 04-07-30-013C.

DO THIS DON’T DO THIS
Inspect the vehicle for an aftermarket oil bath air filter that may be excessively over oiled. DO NOT repair or replace any MAF or MAF/IAT sensor under warranty if the Cause of the Condition is a result of the use of an oil bath air filter that is excessively over oiled resulting in contamination of the sensor.

The use of an aftermarket oil bath air filter that is excessively over oiled may result in any of the following to occur:

  • The malfunction indicator lamp (MIL) may illuminate and a diagnostic trouble code(s) DTC may set.
  • The automatic transmission may shift early and/or late, slipping and/or damaged clutch(es) or band(s).
  • Engine driveability concerns such as but not limited to: poor acceleration from a stop, stumble, rough idle and/or limited engine RPM range.

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Airbag Light On, DTC B0071 and B0081 Set – 2005-2010 Buick Cadillac Chevrolet GMC Pontiac Saturn HUMMER

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#07-09-41-010D: Airbag Light On, DTC B0071 and B0081 Set (Diagnose and Replace Right Front Seatbelt Buckle, If Necessary) – (May 3, 2010)

Subject: Airbag Light On, DTC B0071 and B0081 Set (Diagnose and Replace Right Front Seatbelt Buckle, If Necessary)
Models: 2006-2010 Buick Lucerne
2006-2010 Cadillac DTS
2007-2010 Cadillac Escalade, Escalade ESV, Escalade EXT
2006-2007 Chevrolet Monte Carlo
2006-2008 Chevrolet Impala
2007-2010 Chevrolet Avalanche, Cobalt, Colorado, Silverado LD, Suburban, Tahoe
2007-2010 GMC Canyon, Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL
2006-2010 HUMMER H3
2009-2010 HUMMER H3T

This bulletin is being revised to update the model years. Please discard Corporate Bulletin Number 07-09-41-010C (Section 09 – Restraints).

Condition

Some customers may comment on the airbag light being illuminated.

Upon investigation, the technician may find DTC B0071 set in the passenger presence system (PPS) and a DTC B0081 in the sensing and diagnostics module (SDM).

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4WD Inoperative, Erratic Fuel Gauge, SIR Light, Service Stability Message – 2002-2009 Buick Chevrolet GMC Oldsmobile Saab

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4WD Inoperative, Erratic Fuel Gauge, SIR Light, Service Stability Message
2004-2007 Buick Rainier
2002-2009 Chevrolet Trailblazer, Trailblazer EXT, Trailblazer SS
2002-2009 GMC Envoy, Envoy Denali, Envoy XL, Envoy XUV
2002-2004 Oldsmobile Bravada
2005-2009 Saab 97x

 

4WD inoperative, SIR lamp, erratic fuel gauge operation and/or a Service Stability Message.

Possible DTCs are C0186, C0196, C0327, C0455, P0452, P0453, P0461, P0462, P0463, P0464 and or U1088.

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